import { useMemo } from 'react';
import {
  Area,
  AreaChart,
  CartesianGrid,
  ResponsiveContainer,
  Tooltip,
  XAxis,
  YAxis,
} from 'recharts';

import type { ProofOfYieldRecord, ProofOfYieldSummary } from '@/lib/analytics-api';

type Point = {
  ts: string;
  cumulative: number;
  pnl: number;
};

type PerformanceLedgerProps = {
  summary: ProofOfYieldSummary;
  records: ProofOfYieldRecord[];
};

export function PerformanceLedger({ summary, records }: PerformanceLedgerProps) {
  const sorted = useMemo(
    () => [...records].sort((a, b) => new Date(a.settled_at).getTime() - new Date(b.settled_at).getTime()),
    [records],
  );

  const curve: Point[] = useMemo(() => {
    let sum = 0;
    return sorted.map((record) => {
      sum += record.pnl;
      return {
        ts: record.settled_at.slice(0, 16).replace('T', ' '),
        cumulative: Number(sum.toFixed(4)),
        pnl: record.pnl,
      };
    });
  }, [sorted]);

  const maxClv = useMemo(() => {
    const values = records.map((record) => record.clv_percent).filter((value) => value !== null) as number[];
    if (values.length === 0) {
      return 0;
    }
    return Math.max(...values);
  }, [records]);

  return (
    <section className="space-y-4">
      <section className="grid gap-3 md:grid-cols-4">
        <article className="panel-glow rounded-xl p-3">
          <p className="text-xs text-[#7a5b46]">推薦筆數</p>
          <p className="mt-2 text-2xl font-semibold text-[#7d2a15]">{summary.total_recommendations}</p>
        </article>
        <article className="panel-glow rounded-xl p-3">
          <p className="text-xs text-[#7a5b46]">命中率</p>
          <p className="mt-2 text-2xl font-semibold text-[#7d2a15]">{summary.win_rate_percent.toFixed(1)}%</p>
        </article>
        <article className="panel-glow rounded-xl p-3">
          <p className="text-xs text-[#7a5b46]">報酬率</p>
          <p className={`mt-2 text-2xl font-semibold ${summary.roi_percent >= 10 ? 'text-[#d1432d]' : 'text-[#7d2a15]'}`}>
            {summary.roi_percent.toFixed(2)}%
          </p>
        </article>
        <article className="panel-glow rounded-xl p-3">
          <p className="text-xs text-[#7a5b46]">平均收盤價差</p>
          <p className="mt-2 dot-matrix text-2xl font-semibold text-[#7d2a15]">
            {summary.avg_clv_percent.toFixed(2)}%
          </p>
        </article>
      </section>

      <article className="panel-glow rounded-2xl p-4">
        <h3 className="dot-matrix text-lg text-[#7d2a15]">公開建議資金成長曲線</h3>
        <div className="mt-3 h-72 w-full">
          <ResponsiveContainer width="100%" height="100%">
            <AreaChart data={curve} margin={{ top: 6, right: 18, bottom: 6, left: 8 }}>
              <defs>
                <linearGradient id="ledgerGradient" x1="0" y1="0" x2="0" y2="1">
                  <stop offset="0%" stopColor="#d1432d" stopOpacity={0.45} />
                  <stop offset="100%" stopColor="#d1432d" stopOpacity={0.03} />
                </linearGradient>
              </defs>
              <CartesianGrid strokeDasharray="4 4" stroke="#eadcb9" />
              <XAxis dataKey="ts" tick={{ fill: '#6d4d39', fontSize: 11 }} />
              <YAxis tick={{ fill: '#6d4d39', fontSize: 11 }} />
              <Tooltip
                contentStyle={{ background: '#fff8e6', borderColor: '#d8b58c' }}
                itemStyle={{ color: '#5f4031' }}
              />
              <Area
                type="monotone"
                dataKey="cumulative"
                stroke="#b83822"
                fill="url(#ledgerGradient)"
                strokeWidth={2.4}
              />
            </AreaChart>
          </ResponsiveContainer>
        </div>
        <p className="mt-2 text-xs text-[#8c2f2f]">歷史最佳收盤價差：{maxClv.toFixed(2)}%</p>
      </article>

      <article className="panel-glow rounded-2xl p-4">
        <h3 className="dot-matrix text-lg text-[#7d2a15]">建議明細（公開透明）</h3>
        <div className="mt-3 overflow-x-auto">
          <table className="w-full text-sm">
            <thead>
              <tr className="border-b border-[#e6cfad] text-[#7a5b46]">
                <th className="py-2 text-left">比賽</th>
                <th className="py-2 text-left">市場</th>
                <th className="py-2 text-left">選項</th>
                <th className="py-2 text-left">投入</th>
                <th className="py-2 text-left">推薦賠率</th>
                <th className="py-2 text-left">收盤賠率</th>
                <th className="py-2 text-left">收盤價差</th>
                <th className="py-2 text-left">結果</th>
                <th className="py-2 text-left">P/L</th>
              </tr>
            </thead>
            <tbody>
              {records.map((record) => (
                <tr key={record.recommendation_id} className="border-b border-[#f2e4cb]">
                  <td className="py-2 text-[#5f4330]">{record.match_id}</td>
                  <td className="py-2 text-[#5f4330]">{record.market_type}</td>
                  <td className="py-2 text-[#5f4330]">{record.selection}</td>
                  <td className="py-2 text-[#5f4330]">{record.stake}</td>
                  <td className="py-2 text-[#5f4330]">{record.recommended_odds}</td>
                  <td className="py-2 text-[#5f4330]">{record.closing_odds}</td>
                  <td className="py-2 text-[#5f4330]">
                    {record.clv_percent === null ? '-' : `${record.clv_percent.toFixed(2)}%`}
                  </td>
                  <td className="py-2 text-[#5f4330]">{record.is_win ? '命中' : '未中'}</td>
                  <td className={`py-2 ${record.pnl >= 0 ? 'text-[#1a9a57]' : 'text-[#8c2f2f]'}`}>
                    {record.pnl >= 0 ? '+' : ''}{record.pnl.toFixed(2)}
                  </td>
                </tr>
              ))}
              {records.length === 0 ? (
                <tr>
                  <td className="py-3 text-[#7a5b46]" colSpan={9}>
                    目前尚未有可公開核對的建議紀錄
                  </td>
                </tr>
              ) : null}
            </tbody>
          </table>
        </div>
      </article>
    </section>
  );
}